Nano-shells are a class of nanoparticles characterized by their core-shell structure. The core is typically made of silica, while the shell is composed of gold. These particles can be precisely tuned to absorb or scatter light at specific wavelengths, making them highly versatile. They are particularly important in photothermal therapy for cancer, where they can absorb near-infrared light and convert it into heat, effectively destroying cancer cells without harming surrounding healthy tissue.
